System and method for creating accurate topographical maps...

Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment

Reexamination Certificate

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Details

C213S209000, C342S357490, C342S357490, C340S992000

Reexamination Certificate

active

10819743

ABSTRACT:
The present invention is directed to a method for acquiring elevation data for an area. The method includes using a GPS receiver to map ground elevations while driving back and forth over an area and periodically recording position, elevation, and time. Then, at least one track is made across the parallel tracks so that the cross track intersects the parallel tracks. The data obtained is processed and elevation data from the cross track is used to adjust elevation data for the parallel tracks, compensating for elevation drift in measurements recorded by the GPS receiver. The adjusted data for the entire area is processed using the method of the present invention to obtain an elevation map for the area.

REFERENCES:
patent: 5396254 (1995-03-01), Toshiyuki
patent: 5633946 (1997-05-01), Lachinski et al.
patent: 5735352 (1998-04-01), Henderson et al.
patent: 5838277 (1998-11-01), Loomis et al.
patent: 6975939 (2005-12-01), Edwards et al.
patent: 2003/0112171 (2003-06-01), Michaelson et al.

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